摘要
利用烧结-脱溶法制备出了多孔铜材料,并通过形貌观察和压缩试验对其孔结构和力学性能进行了表征。结果表明:以工业纯铜粉末和尿素颗粒为原材料,经过压实、烧结和脱溶处理,可获得具有开孔结构、孔隙率60%～80%、孔径100～400μm的多孔铜。该材料压缩应力与其密度直接相关,与孔径没有明显的关系。随密度增加(即孔隙率下降),压缩屈服强度和流变应力上升;随孔径变化,压缩应力-应变曲线变化不明显。
Porous Cu specimens were fabricated through sintering-dissolution technology and their pore morphologies and compressive mechanical properties were characterized in the present study. It is shown that opencell porous Cu can be fabricated by using commercially pure Cu powder and carbamide particles through consolidating, sintering and dissolving processes, the pore size and porosity of which can be varied in the ranges of 60%-80% and 100-400 μm, respectively. The compressive stress of the porous specimens are directly related to their densities but less dependent on their pore sizes. The compressive yield stress and flow stress increase with increasing the density or decreasing the porosity, while they basically keep unchanged with changing the pore size.
出处
《机械工程材料》
CAS
CSCD
北大核心
2007年第6期9-11,共3页
Materials For Mechanical Engineering
关键词
多孔铜
烧结
压缩性能
porous Cu
sintering
compressive property
